Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000015POE
Model Year Start: 2018 Model: Camry Prod Date Range: [06/2017 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: PROBLEM SYMPTOMS TABLE; 2018 - 2024 MY Camry [06/2017 -        ]

PROBLEM SYMPTOMS TABLE

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2020 - 2022 MY Camry [09/2019 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2023 - 2024 MY Camry [08/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION

HINT:

  • Troubleshooting of the theft deterrent system is based on the premise that the power door lock control system and the wireless door lock control system are operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that the power door lock control system and the wireless door lock control system are operating normally.
  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Theft Deterrent System

Symptom

Suspected Area

Link

Theft deterrent system cannot be set

Refer to "Security Indicator Light Does not Blink"*1

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): Security Indicator Light Does not Blink

Refer to "Security Indicator Light Does not Blink"*2

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): Security Indicator Light Does not Blink

Refer to "Front Door Courtesy Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Front Door Courtesy Switch Circuit

Refer to "Rear Door Courtesy Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Rear Door Courtesy Switch Circuit

Refer to "Luggage Compartment Door Courtesy Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Luggage Compartment Door Courtesy Switch Circuit

Front door lock with motor assembly

2018 - 2024 MY Camry [03/2017 -        ]; DOOR LOCK: FRONT DOOR LOCK: INSPECTION

Rear door lock with motor assembly

2018 - 2024 MY Camry [03/2017 -        ]; DOOR LOCK: REAR DOOR LOCK: INSPECTION

Luggage compartment door lock assembly

2018 - 2024 MY Camry [03/2017 -        ]; DOOR LOCK: LUGGAGE COMPARTMENT DOOR LOCK: INSPECTION

Refer to "Ignition Switch Circuit"*2

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Ignition Switch Circuit

Refer to "Unlock Warning Switch Circuit"*2

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Unlock Warning Switch Circuit

Refer to "Engine Hood Courtesy Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Engine Hood Courtesy Switch Circuit

Security indicator light does not blink when theft deterrent system is set

Refer to "Security Indicator Light Does not Blink"*1

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): Security Indicator Light Does not Blink

Refer to "Security Indicator Light Does not Blink"*2

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): Security Indicator Light Does not Blink

Alarm sounding state cannot be canceled when engine switch is turned on (IG)*1

Refer to "Smart Key System (for Start Function)"

2018 - 2022 MY Camry [03/2017 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): HOW TO PROCEED WITH TROUBLESHOOTING 2023 - 2024 MY Camry [08/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): HOW TO PROCEED WITH TROUBLESHOOTING

Certification ECU (Smart key ECU assembly)

-

If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Alarm sounding state cannot be canceled when ignition switch is turned to ON*2

Refer to "Ignition Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Ignition Switch Circuit

Refer to "Unlock Warning Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Unlock Warning Switch Circuit

If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Theft deterrent system can be set even when door is open

Refer to "Front Door Courtesy Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Front Door Courtesy Switch Circuit

Refer to "Rear Door Courtesy Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Rear Door Courtesy Switch Circuit

Refer to "Luggage Compartment Door Courtesy Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Luggage Compartment Door Courtesy Switch Circuit

If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Theft deterrent system can be set even when engine hood is open

Refer to "Engine Hood Courtesy Switch Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Engine Hood Courtesy Switch Circuit

Vehicle horns do not sound while theft deterrent system is in alarm sounding state

Refer to "Horn Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Horn Circuit

Low beams do not blink while theft deterrent system is in alarm sounding state

Refer to "LO-beam Headlight does not Illuminate"

2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (EXT): LIGHTING SYSTEM: LO-beam Headlight does not Illuminate 2020 - 2024 MY Camry [09/2019 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: LO-beam Headlight does not Illuminate

If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Taillights do not blink while theft deterrent system is in alarm sounding state

Refer to "Taillight Relay Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: Taillight Relay Circuit

If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Hazard warning lights do not flash while theft deterrent system is in alarm sounding state

Combination meter assembly

-

If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Interior lights does not light up while theft deterrent system is in alarm sounding state

Refer to "Interior Light Circuit"

2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (INT): LIGHTING SYSTEM: Interior Light Circuit 2020 - 2024 MY Camry [09/2019 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Interior Light Circuit

If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Security horn does not sound while theft deterrent system is in alarm sounding state

Refer to "Security Horn Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Security Horn Circuit

Low beams blink even when theft deterrent system is not set

Refer to "LO-beam Headlight does not Illuminate"

2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (EXT): LIGHTING SYSTEM: LO-beam Headlight does not Illuminate 2020 - 2024 MY Camry [09/2019 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: LO-beam Headlight does not Illuminate

If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Taillights blink even when theft deterrent system is not set

Refer to "Taillight Relay Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: Taillight Relay Circuit

If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Hazard warning lights flash even when theft deterrent system is not set

Combination meter assembly

-

If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Interiors light comes on even when theft deterrent system is not set

Refer to "Interior Light Circuit"

2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (INT): LIGHTING SYSTEM: Interior Light Circuit 2020 - 2024 MY Camry [09/2019 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Interior Light Circuit

If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)

2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

The vehicle does not enter the alarm sounding state as the battery is reconnected

Check the battery*3

2018 - 2024 MY Camry [03/2017 -        ]; A25A-FKS (BATTERY / CHARGING): CHARGING SYSTEM: ON-VEHICLE INSPECTION

Check the battery*4

2018 - 2024 MY Camry [06/2017 -        ]; 2GR-FKS (BATTERY / CHARGING): CHARGING SYSTEM: ON-VEHICLE INSPECTION

Refer to "Power Source Circuit"

2018 - 2024 MY Camry [03/2017 -        ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Power Source Circuit

  • *1: w/ Smart Key System
  • *2: w/o Smart Key System
  • *3: for A25A-FKS
  • *4: for 2GR-FKS